Dumping-wagon.



G. M. HEAD.

DUMPING WAGON. APPLIOATION IILED' SEIPT. 26, 1908.

Patented July 20, 1909.

-WITNESSES GEORGE M. HEAD, OF ST. LOUIS, MISSOURI.

DUMPING-WAGON.

Specification of Letters Patent.

Application filed September 26, 1908.

Patented July 20, 1909.

Serial No. 454,929. v

To all whom it may concern:

Be it known that I, GEORGE M. HEAD, citizen of the United States, residing at St. Louis, State of Missouri, have invented certain new and useful Improvements in Dumping- Wagons, of which the following is a full, clear, and exact description, reference being had to the accompanying drawings, forming a part hereof.

My invention has relation to improvements in dumping-wagons; and it consists in the novel details of construction more fully set forth in the specification and pointed out in the claim. I

In the drawings, Figure 1 is a side elevation of a wagon showing my invention applied thereto, the bottom being closed; Fig. 2 is a vertical transverse section on line 22 of Fig. 1; Fig. 3 is an enlarged sectional detail on line 33 of Fig. 2; and Fig. 4 is a detached plan view of oneof the gate-supporting arms.

The object of my invention is to construct a dumping wagon, the contents of which may be instantly released by the simple manipulation of a tripping lever under the control, and within easy reach of, the driver; one which shall be positive in its action, sim le in construction, and one possessing furt er and other advantages better apparent from a detailed description of the invention which is as follows Referring to the drawings, B, represents the body of a wagon which may be of any conventional form or construction. Mounted between the lower edges of the sides of the body B are a series of parallel rock shafts 1, to the projecting ends of which on one side of the wagon body are secured the lever-arms 2, the upper ends of which are pivotally and collectively secured to a common connecting rod 3 disposed longitudinally with the body as shown. One of the levers is extended upwardly beyond the rod 3, thereby forming a'tripping lever 4 controlled by a spring-pawl 5 enga ing a curved toothed rack or bar 6 to whic the awl, and hence the lever may be locked, as lly understood in the art.

Rigidly secured at opposite ends of each rock-shaft, between the sides of the wagon body, and disposed at an angle to the lever arms 2, are arms 7, 7, provided each with a lateral depression or pocket 8 terminating in a head or cam formation 9, the base of the pocket or depression, and the head 9 affording a bearing for the travel of the rollers 10'mounted in brackets, 11 secured to the under side of a series of gravitating gates G collectively forming the bottom of the body. These gates are suspended from hinge-arms or spindles tin the sides of the body as shown.

The operation of the invention is as follows :By throwing the tri ping-lever forward and locking the same 1n the full position shown in Fig. 1, the connecting rod 3 will be advanced forward, thereby oscillating forwardly the entire series of lever-arms 2 as shown. With this oscillation, the entire serieseof rock-shafts 1, 1, will be rocked in proper direction to oscillate upwardly the gate-supporting arms 7, 7, bringing the latter to a horizontal position, and thereby lifting the entire series of gates G to a correspond ingly horizontal position and holding them there, thus closing the wagon-bottom. By pulling the tripping-lever rearwardly as shown by the dotted position of the parts in Fig. 1, the reverse of the several operations takes place, the arms 7 swinging away from the gates, the latter automatically gravitating or swinging to an open position, thus allowing the contents of the wagon to be discharged or dumped, (see dotted position of parts Figs. 1 and 3). With the oscillations of the arms 7, 7, the anti-friction rollers 10 travel freely over the parts 9 and 8, the presence of the pocket 8 permitting the necessary opening of the gate (a swing of about 80 degrees) Without the necessity of oscillating the lever 4 through a greater are than perhaps 45 degrees. In other words the cam 9 resulting from the pocket formation or depression 8, imparts an angular movement to the gate G considerably in excess of that participated in by the lever 4 by virtue of the travel of the roller 10 over the parts 9 and 8 with the oscillation of the arm 7. This is obvious from an inspectionfor exam le of Fig. 3. The moment the arm 7 has osci lated downwardly sufficiently to have permitted the roller 10 to pass off the cam 9, the sudden descent it then subsequently makes into the pocket or depression 8, obviously allows the gate a movement in excess of any oscillation participated in either by the tripping-lever 4, or by the arm 7.

Having described my invention, what I claim is I In combination with a wagon-body, a series of gates hinged in suitable relation to form a bottom therefor, a series of rock-- shafts mounted below the hinge-axes,, leverarms secured to the ends of the rock-shafts and extending upwardly along the side of the wagon-body, means within reach of the driver for oscillating the lever-arms and rotating the rock-shafts, a series of gate-supporting arms secured to the rock-shafts, sald arms havlng lateral ClGPIG'SSl'OilS and terminal cam formations, and rollers on the gates engaging said depressions and came during the oscillations thereof, whereby the gate 'may describe an arc in excess of that described by the gate-supporting arm for any oscillation of the latter, substantially as set GEORGE M. HEAD.

Witnesses W. C KILLEEN, CHAs. A. BECKER. 

